I have a kit like that, but haven't tried it yet. I certainly would not level the reticle off of the level on a turret, though. In reality, a "level" reticle might be the scope tracking through a vertical plumb line when the rifle is placed level.I have use this bit of kit and had good results, an easy button over hanging plumb bobs or other more elaborate procedures.
All suggested ways will work but for me this just makes life easy and I keep it in my range locker to assist others that come in to start their shooting career with their new rifle and scope.
Professional Scope Reticle Leveling System | Wheeler
Professional Reticle Leveling Systemwww.wheelertools.com
Danny
